Convert Gigabytes to Megabytes
Convert Gigabytes to Megabytes instantly. 1 Gigabyte (GB) equals 1,000 Megabytes (MB).
Gigabytes to Megabytes conversion table
| Gigabytes (GB) | Megabytes (MB) |
|---|---|
| 1 GB | 1,000 MB |
| 2 GB | 2,000 MB |
| 3 GB | 3,000 MB |
| 5 GB | 5,000 MB |
| 10 GB | 10,000 MB |
| 20 GB | 20,000 MB |
| 50 GB | 50,000 MB |
| 100 GB | 100,000 MB |
| 500 GB | 500,000 MB |
| 1,000 GB | 1,000,000 MB |
1 Gigabyte = 1,000 Megabytes · multiply Gigabytes by 1,000
About converting Gigabytes to Megabytes
Gigabytes (GB) and Megabytes (MB) are both units of digital storage, so converting between them is a single multiplication: multiply your Gigabytes figure by 1,000. Ten Gigabytes comes to 10,000 Megabytes, and a hundred works out at 100,000 Megabytes.
Rule of thumb: going from Gigabytes to Megabytes multiplies, so the figure always grows — one Gigabyte is already 1,000 Megabytes. If your answer came out smaller, you have the conversion the wrong way round.
What is a Gigabyte?
A gigabyte is a billion bytes in SI terms, and it is the unit consumers actually shop in: phone storage, mobile data allowances, game downloads. It is also where the decimal-versus-binary split gets genuinely interesting, because the answer depends on the product. Drives and data plans are sold in decimal gigabytes; memory is not, and an "8 GB" RAM module really is 8 GiB, because memory is physically addressed in powers of two and could not be built in round decimal sizes. Windows then reports both using binary units labelled "GB".
What is a Megabyte?
A megabyte is a million bytes under the SI prefixes this site uses, though Windows will call 1,048,576 bytes a megabyte; the IEC name for that binary version is the mebibyte (MiB). The best illustration of how confused this all got is the 1.44 MB floppy disk, whose "MB" was neither one nor the other — it meant 1,024,000 bytes, a decimal thousand of binary kilobytes, and essentially nothing else has ever used that unit. Today the megabyte is the natural size of a photo, a song or a document.
To put both in perspective: an hour of HD streaming video runs to a few gigabytes, while a minute of MP3 audio is roughly a megabyte.
The converter above updates as you type, and the table lists common values for quick reference. Need the opposite direction? Use the Megabytes to Gigabytes converter, or browse all Digital Storage converters.
Frequently asked questions
How many Megabytes are in one Gigabyte?
There are 1,000 Megabytes in one Gigabyte.
How do I convert Gigabytes to Megabytes?
Multiply the number of Gigabytes by 1,000. For example, 10 Gigabytes = 10,000 Megabytes.
What is 100 Gigabytes in Megabytes?
100 Gigabytes is equal to 100,000 Megabytes.
How do I convert Megabytes to Gigabytes?
Multiply the Megabytes value by 0.001 (or divide by 1,000).
Is this Gigabytes to Megabytes conversion exact?
Yes, exactly. Both units are fixed against the same base by definition, and 1 Gigabyte = 1,000 Megabytes is the complete value — nothing is rounded away.
What is a Gigabyte?
A gigabyte is a billion bytes in SI terms, and it is the unit consumers actually shop in: phone storage, mobile data allowances, game downloads. It is also where the decimal-versus-binary split gets genuinely interesting, because the answer depends on the product. Drives and data plans are sold in decimal gigabytes; memory is not, and an "8 GB" RAM module really is 8 GiB, because memory is physically addressed in powers of two and could not be built in round decimal sizes. Windows then reports both using binary units labelled "GB".
What is a Megabyte?
A megabyte is a million bytes under the SI prefixes this site uses, though Windows will call 1,048,576 bytes a megabyte; the IEC name for that binary version is the mebibyte (MiB). The best illustration of how confused this all got is the 1.44 MB floppy disk, whose "MB" was neither one nor the other — it meant 1,024,000 bytes, a decimal thousand of binary kilobytes, and essentially nothing else has ever used that unit. Today the megabyte is the natural size of a photo, a song or a document.